Improvement in coal-oil lamps



L. BADER.

f Coal Oil Lamp.

' Patented July 7, 1863.

N. FUERS. Phocliihagnptw, Wash'mglun, D. C.

' UNITED STATES PATENT OFFICE.

LOUIS BADER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND CHRISTIAN F. ELWERT, OF SAME PLACE. y

IMPROVEMEN'l IN COAL-OIL LAMPS.

Specification forming part of Letters Patent No. 39,195, dated July 7, 1863.

To all whom, t may concern:

Be it known that I, LoUisBADER, of Philadelphia, Pennsylvania, have invented an Improvementof CoalOil Lamps; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to au improvement in burners for coal-oil lamps; and my improved burner consists of certain cases inclosing four chambers, arranged in respect to each other and to the wick and communicating with each other substantially as described hereinafter, so that the smoke and gases may be etfectually consumed, and so that the flame may burn with brilliancy and steadiness without the aid of a chimney.

In order to enable others skilled in the art to make and use my invention, Iwill now proceed to describe its construction and operation.

0n reference to the accompanying drawings, which form a part of this specication, Figure l is a vertical section of my improved coal-oil lamp; Fig. 2, a sectional plan on the line l 2, Fig I; and Fig. 3, a sectional plan on the line 3 4, Fig. l.

Similar letters refer to similar parts throughout the several views.

A represents the reservoir or fountain containing tlle coal-oil, and into this reservoir, the form of which may be varied to suit the taste of the constructer, is screwed the burner, which may be described as follows: B is the wick-tube, which is of a proper form to receive the usual flat wick, C, the tube passing through and being secured to the hollow cylinder D, which is closed above and below, and through which passes the spindle E, cogl wheels e e on the latter projecting through slots in the wick-tube and serving to raise or lower the wick when the spindle is turned.

Secured to or formingla part of the cylinder D is a casing, F, which in the present instance is of the spherical or nearly spherical form shown in Fig. l, but which may be varied in shape without departing from the main features of my invention. 0n the top of the case rests the dome or deiector H, which has the usual oblong slot coinciding with the ilat wick-tube, the dome being so hinged to the case that the former can be thrown bac'k to the position illustated by dotted lines, Fig. 1. Within the case F is another case, G, the purport of which will be rendered apparent hereinafter.

The above-described parts, arranged in respect to each other substantially as described, form several chambers, which may be enu merated as follows: First, the chamber I within the closed cylinder B, this chamber having no communication with the others; second, the chamber J, which I term the smoke-chamber, third, the chamber K, which I term the gas chamber 5 fourth, the chamber L within the dome or deilector H; and, fifth, the chamber M, which I have denominated the cold f air chamber. The chamber J communicates, through openings fr, with the chamber L within the dome H, and through oblong slots or other suitablyformed openings, y, with the gas-chamber K, with which communicates the cold-air chamber M, the gas-chamber having a free communication with the dome-chamber L.

I may here remark that my above-described burner is the result of a series of very careful experiments, made with the view of producing a coal-oil lamp-burner the flame of which should be steady, and should burn brilliantly without the aid of a chimney. These desirable ends have been successfully attained by my improvement, as practical tests have fully proved. I believe the following to be a correct explanation of the causes of these valuable results: When the wick of the lamp is ignited, the fresh air rushes through perforations into the fresh-air chamber M, and thence upward through the chamber K to the top of the Wick to support the combustion of the llame, a continuous forcible draft being thus created in the direction pointed out by the arrows, the draft having a tendency to exhaust the chamber J. The unconsumed smoke and gases which cannot escape through the slot in the dome are drawn from the interior of the dome into the chamber J, and thence through the slots y into the chamber K, where they are mixed with the fresh air and are in a condition to be consumed by the flame, the latter burning with brilliancy and steadiness and Without the usual smoke. At the same eating with each other substantially as detime the Hanne cannot be readily extinguished scribed, for the purpose specified.

when exposed to agitated air or when the In testimonywhereof I havesigned myname lamp is carried about. v to this specification in the presence of two sub- I claim us my invention and desire to sesorihing witnesses. eure by Letters Patent- The burner composed of cases inelosing Vitnesses: chambers J, K, L, and M, arranged in respect to each other and to the wick and communi- LOUIS BADER.

JOHN WHITE, HENRY HoWsoN. 

